S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

5 bar FPR question. How do you test a FPR to see if what you have is really a 5 Bar FPR

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Old May 10, 2005 | 01:09 PM
  #21  
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Default good to hear jim...

my head was beginning to hurt...now I have to order a 5bar FPR.
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Old May 10, 2005 | 01:32 PM
  #22  
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Default That part # is for the real Bosch 5 bar FPR

B 280 550 113 = 5 bar
B 280 160 575 = 4 bar
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Old May 10, 2005 | 02:23 PM
  #23  
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Crush them to become 5bar? Yes.
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Old May 10, 2005 | 02:26 PM
  #24  
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yea, from that picture it dosent seem like somthing id pay 80-100 for. looks DIY
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Old May 11, 2005 | 02:01 AM
  #25  
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Default Feel free to make fun

I've been trying to figure it out on my own but haven't had any luck. What does "bar" mean, e.g. a 1 bar chip or "5 bar" in this case. I'm learning so take it easy on me.
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Old May 11, 2005 | 04:36 AM
  #26  
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Bar is a unit of pressure just like PSI
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Old May 11, 2005 | 08:11 AM
  #27  
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14.5 psi
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